 body {
   margin: 0;
   place-items: center;
   height: 100vh;
   width: 100vh;
   min-width: 320px;
   min-height: 100vh;

   font-family: Inter, system-ui, Avenir, Helvetica, Arial, sans-serif;
   line-height: 1.5;
   font-weight: 400;

   color-scheme: light dark;
   color: #333;

   font-synthesis: none;
   text-rendering: optimizeLegibility;
   //  -webkit-font-smoothing: antialiased;
   -moz-osx-font-smoothing: grayscale;

   //el-menu 菜单样式
   --el-menu-hover-bg-color: #265983;
   /*鼠标悬浮到菜单上的背景色，在导航的样式文件中有引用*/
   --el-menu-active-color: #66b3f9;
   --el-menu-item-height: 44px;
   --el-menu-sub-item-height: 38px;
   --el-menu-level-padding: 15px;

   --el-menu-text-color: white;
   --el-menu-hover-text-color: white;

   overflow: hidden;
   /* 可以防止浏览器默认滚动条 */

   /*=========================流程图样式==============================*/
   --vf-node-bg: #c1e1ff;
   --vf-node-color: #66b3f9;
   --vf-node-text:#333;
 }

 a {
   font-weight: 500;
   color: #646cff;
   text-decoration: inherit;
 }

 a:hover {
   color: #535bf2;
 }

 h1 {
   font-size: 3.2em;
   line-height: 1.1;
 }

 button {
   border-radius: 8px;
   border: 1px solid transparent;
   padding: 0.6em 1.2em;
   font-size: 1em;
   font-weight: 500;
   font-family: inherit;
   background-color: #1a1a1a;
   cursor: pointer;
   transition: border-color 0.25s;
 }

 button:hover {
   border-color: #646cff;
 }

 button:focus,
 button:focus-visible {
   outline: 4px auto -webkit-focus-ring-color;
 }

 .card {
   padding: 2em;
 }

 #app {
   height: 100vh;
   /* 100% viewport height */
   width: 100vw;
   /* 100% viewport width */
   margin: 0 auto;
 }

 @media (prefers-color-scheme: light) {
   :root {
     color: #213547;
     background-color: #ffffff;
   }

   a:hover {
     color: #747bff;
   }

   button {
     background-color: #f9f9f9;
   }
 }